[ECOS] Re: STM32F4 Discovery + LwIP

[John Dallaway <john@dallaway.org.uk>]

Hi Valentin

On 25/03/14 08:26, Valentin BOUSSON wrote:

> Today, I have a problem to set up *LwIP* on my *STM32F4DISCOVERY* with
> the standard extension board.
> (http://www.st.com/web/catalog/tools/FM146/CL1984/SC720/SS1462/PF255417)
> 
> I tried a lot of thing, as using the default configuration for eCos,
> adding packages "Ethernet common drivers" and "LwIP stack". No confilct
> appears, but an the stack doesn't seem to work at all.

At minimum, you will need to add the CYGPKG_DEVS_ETH_PHY and
CYGPKG_DEVS_ETH_CORTEXM_STM32 hardware packages to the
"stm32f4discovery" target description record in packages/ecos.db.
Actually, it would be preferable to create a new target description
record for STM32F4-Discovery with STM32F4DIS-EXT.

You might also be necessary to modify the the hal_system_init() function
in the STM32F4-Discovery platform HAL to setup the ethernet hardware.
Compare with the hal_system_init() function from the STM32x0G platform HAL.

With these changes in place, you should be able to create a new eCos
configuration for lwIP based on the eCos "lwip_eth" packages template.

I hope this helps...

John Dallaway
eCos maintainer
http://www.dallaway.org.uk/john

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